KnKut Silver & Deming 1/2" Reduced Shank Drill Bits are manufactured from a high grade Molybdendum high speed steel, that has high vanadium content. Gold Surface Treated for maximum lubricity and nitride treated giving them the hardness to drill tough materials such as stainless steel and titanium alloy. Made of Hi-Molybdenum tool steel with the body and clearance surface treated for maximum lubricity. Space age Nitro-Carbonized steel withstands higher drilling tempretures while maintaining sharpness. Precision ground point, flutes, body clearance and drill diameter give you the ultimate in accuracy and performance. Recommended for use in work-hardened grades of stainless steel and other hard metal drilling applications. 3 Flats on Shank.